5/35X4/9+4/7X6/91.2/9-2/9X3/102.5/35X4/9+4/7X6/93.5/6除以(1/2+5/6)4.(3.4-2.4)除以1/5X4/75.(1除以1/4+1/4除以1)X46.29X35/367.2000除以2000又2000/20018.2000/2001X20029.229又1/11除以46又1/4410.126又1/15除以3111.13又1/5X5/6+28又2/7X7/9